Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nguy huu cao snippets" » "nguyen huu cao snippets", "ngoc huu cao snippets", "duy huu cao snippets", "nguy huu co snippets", "nguy huu hao snippets", "nguy huu chau snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("nguy huu cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nguy huu cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nguy huu cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nguy huu cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.